Curtis Belknap / Mbed 2 deprecated LSM303DLHTest

LSM303DLH Test Program for get angle.

Dependencies:   mbed

Fork of LSM303DLHTest by Toshihisa T

LSM303DLH/vector.cpp

Committer:
cbelknap
Date:
2015-03-18
Revision:
5:05d5e64e76f2
Parent:
3:f3796683b4c9

File content as of revision 5:05d5e64e76f2:

#include <vector.h>
#include <math.h>

void vector_cross(const vector *a,const vector *b, vector *out)
{
  out->x = a->y*b->z - a->z*b->y;
  out->y = a->z*b->x - a->x*b->z;
  out->z = a->x*b->y - a->y*b->x;
}

float vector_dot(const vector *a,const vector *b)
{
  return a->x*b->x+a->y*b->y+a->z*b->z;
}

void vector_normalize(vector *a)
{
  float mag = sqrt(vector_dot(a,a));
  a->x /= mag;
  a->y /= mag;
  a->z /= mag;
}